Final Fantasy ~ Final Fantasy Main Theme


Final Fantasy II ~ The Rebels


Final Fantasy III ~ Eternal Wind


At this point it gets really hard for some of these.

Final Fantasy IV ~ Theme of Love

The Red Wings and the Lunerians would have been my second choices

Final Fantasy V ~ Dear Friends

Battle on the Bridge and Home, Sweet Home would have been my second choices

Final Fantasy VI ~ Aria di Mezzo Carattere

Terra's Theme would have been my other choice

From here it gets progressively easier...

Final Fantasy VII ~ Main Theme of Final Fantasy VII


Final Fantasy VIII ~ Liberi Fatali

Eyes on Me would have been my second choice. Though I'm also partial to The Successor

Final Fantasy IX ~ Melodies of Life

You're Not Alone would be my second choice.

Final Fantasy X ~To Zanarkand


Final Fantasy XII


Final Fantasy XIII ~ Blinded by the Light


I won't bother with the spin-off series or sequels.